[seqfan] Next perfect power number?

Zak Seidov zakseidov at mail.ru
Sun Jul 17 14:46:16 CEST 2016

 Dear seqfans,

Plz help with the best (fastest) code in PARI/Mma
for finding ppn next to given n (which itself is ppn).
Interval between consecutive ppn's
generally increases and checking each n+1, n+2,... is very slow
(for large n's).

Thx, Zak

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